In 2017, Knox County, IL had a population of 51.4k people with a median age of 42.2 and a median household income of $41,972. Between 2016 and 2017 the population of Knox County, IL declined from 51,752 to 51,374, a -0.73% decrease and its median household income grew from $40,605 to $41,972, a 3.37% increase.
The population of Knox County, IL is 83.4% White Alone, 8.42% Black or African American Alone, and 5.53% Hispanic or Latino. 5.18% of the people in Knox County, IL speak a non-English language, and 98% are U.S. citizens.
The median property value in Knox County, IL is $81,700, and the homeownership rate is 66.1%. Most people in Knox County, IL commute by Drove Alone, and the average commute time is 17.4 minutes. The average car ownership in Knox County, IL is 2 cars per household.